LT2MSKU-T
LT2MSKU-T
Version: 2008/05/23
Version: 2008/05/23
7
Mounting of remote power supply module
The optionally available remote power supply module is linked with the basic sub-unit by
means of DIN connectors. Further, the circuit board has switches for the device configura-
tion. For both operations, the device has to be opened as illustrated in the figures below,
keeping to the following sequence:
1. Turn
the
LT2MSKU-T
upside down.
2. Remove
clamp feet.
Figure 12: Removal of clamp feet
4
Display elements
The front panel of the
LT2MSKU-T
is equipped with 11 LEDs, which signal the different
operating states. Their meaning can be seen from the following table:
Meaning
ON
INT
E1 (U) E1 (V) E1 (U) E1 (V) DSL 1 DSL 2 NMS
T3
RPS
Normal operation (without
FSP)
ON OFF OFF OFF OFF
OFF
OFF
OFF
OFF
OFF
OFF
Normal operation (FSP
enabled)
ON OFF
OFF
OFF
ON OFF
OFF
OFF
OFF
OFF
ON
Error in the remote power
supply circuit ** (operation
with FSP)
ON OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1 Hz
Urgent alarm at V2Man
(LOS/LOF/BER)
ON OFF
OFF
ON OFF
ON OFF
OFF
OFF
OFF
OFF
E1
AIS at V2Man
ON
OFF
OFF
4 Hz
OFF
4 Hz
OFF
OFF
OFF
OFF
OFF
Urgent alarm at UKSan
(LOF SHDSL)
ON OFF
ON OFF ON OFF OFF
OFF
OFF
OFF
OFF
Urgent alarm at UKSan
(LOS SHDSL)
ON OFF
OFF ON OFF ON OFF
OFF
OFF
OFF
OFF
AIS
at
UKSan
ON
4
Hz
4
Hz
DSL
SHDSL
startup*
ON
1
Hz
1
Hz
LT
is
being
administered
ON
ON
Internal
alarm
of
theLT
OFF
ON
T3
Failure
of
T3an
ON
OFF
ON
The table above applies to a system that has been configured for 2-system operation, where-
by both systems are exposed to the same error.
Explanation of symbols:
*
flashes until SHDSL to the NT is established
**
e.g. overvoltage, overcurrent, unbalance or line interruption (open end)
ON
LED shines permanently
OFF
LED does not shine
1 Hz
LED flashes at 1 Hz
4 Hz
LED flashes at 4 Hz
Table 1: Meaning of the LED displays
14
11
